>> reporter: also in ohio, trying to hang on to a slim lead, president obama as a new poll shows romney has trimmed his opponent's advantage to four points. >> i need you fired up. i need you ready to go to vote because we've got some work to do. we've got an election to win. everything that we fought for in 2008 is on the line in 2012. >> reporter: ohio is the closest thing to a must-win battleground for both campaigns no. republican president has won the white house without t.obtuse, romney waded into an explosive social issue telling "the des moines register" as president he would not pursue any legislation with regards to abortion, an apparent shift on an issue the obama campaign has tried to use against him. the president's campaign pounced writing we know the truth about where he stands on a woman's right to choose. meanwhile, the campaign's "sesame street" sideshow has turned into a regular feature. will.i.am opened the president's rally yesterday with a familiar theme ♪ sunny day." >> somebody is finally getting tough on big bird. who knew that he was driving our deficit? >> h